<p><span style="padding: 3px 10px; border-radius: 5px; color: #ffffff; font-weight: bold; display: inline-block; background-color: #ff0000;"> External Email - Use Caution </span></p><p></p><div dir="ltr">Thanks.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Aug 22, 2019 at 6:29 PM Denis-Alexander Engemann <<a href="mailto:denis.engemann@gmail.com">denis.engemann@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><p><span style="padding:3px 10px;border-radius:5px;color:rgb(255,255,255);font-weight:bold;display:inline-block;background-color:rgb(255,0,0)"> External Email - Use Caution </span></p><p></p><div><div dir="auto">One approach is to use some non-parametric stats such as Mann-Whitney-U or Wilcoxon signed rank tests, depending on the question. You can also avoid orthogonalization by keyword argument if you really need to satisfy the positive definite constraint.</div><div dir="auto"><br></div><div dir="auto">HTH,</div><div dir="auto">Denis </div></div><div dir="auto"><br></div><div><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu 22 Aug 2019 at 13:02, Vivek Sharma <<a href="mailto:vivek.sharma1510@gmail.com" target="_blank">vivek.sharma1510@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><p><span style="padding:3px 10px;border-radius:5px;color:rgb(255,255,255);font-weight:bold;display:inline-block;background-color:rgb(255,0,0)"> External Email - Use Caution </span></p><p></p><div dir="ltr">Hi,<div><div>What kind of statistical test can be applied to compare among the different envelope correlation matrix?</div></div><div>I wanted to calculate how significant is the difference between the two matrices and in general, these require positive definite</div><div>Thanks</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Aug 22, 2019 at 12:40 PM Alexandre Gramfort <<a href="mailto:alexandre.gramfort@inria.fr" target="_blank">alexandre.gramfort@inria.fr</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> External Email - Use Caution <br>
<br>
as an orthogonalization is performed to fix the leakage the matrix is<br>
not positive definite<br>
and a correlation matrix per se anymore.<br>
<br>
HTH<br>
Alex<br>
<br>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail-m_9108864284064863512m_-326250523544153063gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div><span style="font-size:12.8px">Vivek Sharma</span></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
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